Castoreum is made from secretions that come from the castor sacs of a beaver's anus. This flavoring is used in many vanilla and raspberry flavorings. You usually won't see castoreum on the label, because it's listed as "natural flavoring."

2. Dehydrated fish bladders in beers

Some beers use an ingredient called isinglass, which is made from dried fish bladders.

3. Maggots and mites in canned mushrooms

The FDA legally allows 19 maggots and 74 mites in a 3.5-ounce can of mushrooms.

4. Human hair in bread dough

L-cysteine is a non-essential amino acid made from dissolved human hair or duck feathers. It's used to add to texture to breads.

5. Bugs secretions in jelly beans

Hard, shiny candy like jelly beans are often coated with shellac, which is a sticky substance derived from the secretion of the lac bug.

6. Flame retardant in soda

Brominated vegetable oil, or BVO, was originally used to keep plastics from lighting on fire. Now, you can find it in sodas like Mountain Dew and Fanta Orange.

7. Dog heat hormones in wine

Some wines, sodas and juices contain a preservative and anti-fungal ingredient called methylparaben, which originates in a female dog's sexual organ during heat.

8. Sheep secretions in gum

Lanolin, an oily secretion found in the wool of sheep, is an FDA-approved additive used to soften chewing gum.

9. Sex hormones in milk

Cows produce about double the milk they did a few decades ago thanks to synthetic hormones.

10. Rat hairs in chocolate

While they may not be an ingredient in chocolate, the FDA legally allows one rat hair per 100 grams in six 100-gram subsamples of chocolate and 60 insect fragments per 100 grams in six 100-gram subsamples.

11. Lubricant in salad

Propylene glycol is used in some fast-food salads and bagged salads to keep the lettuce looking green. It's also one of the key ingredients in sexual lubricant.

12. Paint chemicals in salad dressing

Titanium dioxide is common chemical found in paint and sunscreen. It's also used in salad dressing, coffee creamers and icing.

13. Cloned cow's stomach in cheese

While traditional cheese makers use rennet derived from mucosa in a calf's fourth stomach. The growing trend is to turn to cloned calf stomachs to make cheese.

14. Shampoo chemicals in produce

Phthalates are chemicals used in shampoos and fragrant soaps. They're also used in pesticides A recent study found these chemicals are wind up in food as well.